<template>
      <el-container class="home-container">
        <!--头部区域-->
        <el-header>
          <div>
            <img src="../assets/logo.png" alt="">
            <span>电商管理系统</span>
          </div>
          <el-button type="info" @click="logout">退出</el-button>
        </el-header>
       <!--页面主体区域-->
        <el-container>
          <!--侧边栏-->
          <el-aside :width="isCollapse? '64px' : '200px'">
            <div class="toggle-button" @click="toggleCollapse()">|||</div>
            <!--侧边栏菜单区-->
            <el-menu background-color="#333744"
                     text-color="#fff"
                     active-text-color="#409ff1"
                     unique-opened :collapse="isCollapse"
                     :collapse-transition="false"
                     :router="true"
                     :default-active="activePath">
              <!--一级菜单-->
              <el-submenu  :index="item.id + ''" :key="item.id" v-for="item in menuList"
                  >
                <!--一级菜单的模板区-->
                <template slot="title">
                  <!--图标-->
                  <i :class="item.icon"></i>
                  <!--文本-->
                  <span>{{item.authName}}</span>
                </template>

                <!--二级菜单-->
                <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children"
                              @click="saveNavState('/'+subItem.path)">
                  <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
            </el-menu>
          </el-aside>
          <!--主体区-->
          <el-main>
            <!--路由占位符-->
            <router-view></router-view>
          </el-main>
        </el-container>
      </el-container>
</template>

<script>
   const menutemplist=[{
     id:1,
     authName:'用户管理',
     icon:'el-icon-s-check',
     children:[{
       id:11,
       authName:'用户列表',
       path:'users'
     }]},{
     id:2,
     authName:'权限管理',
     icon:'el-icon-s-finance',
     children:[{
       id:21,
       authName:'角色列表',
       path:'roles'
     },{
       id:22,
       authName:'权限列表',
       path:'rights'
     }]},{
     id:3,
     authName:'商品管理',
     icon:'el-icon-s-order',
     children:[{
       id:31,
       authName:'商品列表',
       path:'goods'
     },{
       id:32,
       authName:'分类参数',
       path:'cateparams'
     },{
       id:33,
       authName:'商品分类',
       path:'categories'
     }]},{
     id:4,
     authName:'订单管理',
     icon:'el-icon-s-promotion',
     child:[{}]},{
     id:5,
     authName:'数据统计',
     icon:'el-icon-s-marketing',
     children:[{}]
   }]

    export default {
      data() {
        return {
          menuList:[],
          //是否折叠
          isCollapse: false,
          activePath:''
        }
      },
      created(){
        this.getMenuList(),
        this.activePath=window.sessionStorage.getItem('activePath')
      },
      name: "Home",
      methods: {
          logout() {
            window.sessionStorage.clear();
            this.$router.push('/login')
          },
          //获取所有的菜单
          async getMenuList(){
            this.menuList=menutemplist
            return
            const {data: res}=await this.$http.get('menus');
            if(res.meta.status !==200 )return this.$message.error(res.metamsg)
            this.menuList=res.data;
          },
          toggleCollapse() {
              this.isCollapse = !this.isCollapse
          },
      //  保存连接的菜单激活状态
          saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath);
            this.activePath=activePath;
          }
      }
    }
</script>


<style lang="less" scoped>
  .home-container{
    height: 100%;
  }
  .el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    img{
      width: 30px;
      height: 30px;
    }
    > div{
      display: flex;
      align-items: center;
      margin-left: 20px;
      span {
        margin-left: 15px;
      }
    }
  }
  .el-aside{
    background-color: #333744;
    .el-menu {
      border-right: none;
    }
  }
  .el-main{
    background-color: #eaedf1;
  }
  .toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #000;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>
